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PantedNov; 8,1881. f

UNO. 249,295.V

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IHIIIII I l HIHIIIDE INVTNTUR ATTORNEYS.

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t' UNITED STATES PATENT OFFICE. 'r

ROBERT BRUCE AND SIDNEY T. BRUCE, OF MARSHALL, MISSOURI, SAID t SIDNEYT. BRUCE ASSIGNOR TO SAID ROBERT BRUCE.'

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SPECIFICATION forming part of `Letters Patent No. 249,295, datedNovember 8, 1881.

' Application filed June 13, 1881. `(No model.)

` To all whom it may concern:

Be it known that we, ROBERT BRUCE and `SIDNEY THOMAS BRUCE, of Marshall,in the county of Saline and State-of Missouri, have invented a new anduseful Improvement in Corn-Planters, of which the followingisa full,clear, and exact description, reference being had to the annexeddrawings, forming part of this specification.

Our invention relatesto check-row planters 'and it has for its object toprovide a checkrow dropping device which shall be perfectly accurate inits operation.

The invention consists in a toothedV circular disk adapted to cutthrough the loose soil to the solid ground beneath, whereby itsrevolutions shall be rendered more uniform, in comhina-tion with certainother parts, as hereinafter more particularly described.

In the accompanying drawings, Figure 1 is a side elevation," Fig, 2, aplan view; Fig. 3, a vertical section through line .r as of Fig. l, and

Fig. 4 a detail.

We'provide a thin circular metallic disk, a,

which is rigidly secured upon a shaft, b, and

supported in an oscillating frame, o, whose forward end is hinged to thecross-bar d of the forward part of the planter.

To the rear end of frame c,which is arranged within the main frame c,are pivoted two levers, ff, which are also pivoted at their upper ends,respectively, to the arms g g. These arms are' rigidly secured to theopposite ends of a sleeve, l1., which is loosely mounted upon a shaft,which is journaled in brackets k lc, secured to theupper cornersof therectangular axle l. By means of a lever, m, and a 5o rack, u, at theupper end of one of the brackets, the sleeve h and arms g g areoscillated to raise or lower the disk a.. The said disk is provided withrearwardly -inclined teeth o, whose forward edge is made sharp, in order55 that the disk shall readily cut through stalks and otherobstructions, whilethe rear edge of the teeth is made square to preventthe same from sliding forward or otherwise, the teeth entering. into thehard ground beneath the 6o broken soil, and thus holding firmly.

A bell-shaped cam, p, having a semicircular recess, q, cnt in vits rim,is rigidly secured upon the shaft b, and in its concavity the hub r ofthe lever s is keyed upon a sleeve, t,which 6 5,

is held in position by the collar u upon the said shaft. As the camrotates with the disk thelever s is made to oscillate twice at eachrevolution of the former to operate the drop ping-slide. y 7o At therear end of frame c is a scraper, o, for removing any particles of earththat may adhere to the disk.

The main frame eat its forward end is hinged to the cross-bar d, so thatthe runners may be 75 lifted out of the ground by means of the arms w atthe rear portion thereof by depressing the same by means of theoscillating arms which are connected therewith by the pivoted up rightlevers a. The arms a are rigidly se- 8o cured to the outer ends of`shaft t' and oscillated by a lever, z2, and a rack similar to the oneabove described. A

We are aware that a drivin g-wheel to a cornplanter having spikesarranged on its periph- 8 5 ery, which are adapted to penetrate the soilto insure the rotation of said wheel, has before been used, as Well as aspoked wheel. having'a sharp scalloped rim; but we are not aware that athin solid metallic disk having teeth 9o with rearwardly -inclinedcutting-edges has before been adapted to rotate in contact with the hardground under the loose soil for the purpose of drivingaseed-droppingmechanism.

Having thus described our invention, what 95 We claim as new, and desireto secure by Letters Patent, is

1. In a check-row corn-planter, the thin metallic disk having teeth withrearwardly-inclined cutting-edges and square rear edges, in combinationwith a vertically-adjustable frame and a seed-dropping mechanism,whereby the disk is adapted to penetrate deeply into the soil androt-ate in contact with the hard ground underneath, substantially asshown and described, and for the purpose set forth.

2. In a check-row corn-planter, the combination of disk ct, having;rearwardly-inclined teeth, constructed as Y described, oscillating framec, shaft b, scraper o, levers ff, arms gg, sleeve h, shaft i, bracketslok, lever my, rack fn, and rectangular axle I, substantially as shownand described.

' arms gand lever m, substantially as shown and described, said partsbeing connected with the runners and driving-wheel, respectively, as setforth.

ROBERT BRUCE. SIDNEY THOMAS BRUCE.

Witnesses:

JAMES WINGFIELD, HENRY STROTHER.

